Script for Upgrade GCC to Version 7.3, Install Composer, and Upgrade PHP to Version 8.2

#!/bin/sh
# Script for Upgrade GCC to Version 7.3, Install Composer, and Upgrade PHP to Version 8.2
# For CentOS 7.9
# ENL and ESJ for ever and ever...
yum install -y wget bzip2 gcc gcc-c++
cd /tmp
wget http://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/releases/gcc-7.3.0/gcc-7.3.0.tar.gz
tar zxf gcc-7.3.0.tar.gz
cd gcc-7.3.0
./contrib/download_prerequisites
./configure --disable-multilib --enable-languages=c,c++
make -j 4
make install
gcc --version
cd /tmp
rm -rf gcc-7.3.0.tar.gz
cd ~
sudo yum -y install http://rpms.remirepo.net/enterprise/remi-release-7.rpm
yum install yum-utils
sudo yum-config-manager --enable remi-php82
sudo yum -y install httpd mod_ssl postfix dovecot dovecot-mysql php php-fpm php-mysql php-opcache php-xml php-xmlrpc php-imap php-mbstring php-common php-gd php-json php-cli php-pdo php-zip wget unzip 7zip -y
php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
HASH="$(wget -q -O - https://composer.github.io/installer.sig)"
php -r "if (hash_file('SHA384', 'composer-setup.php') === '$HASH') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
sudo php composer-setup.php --install-dir=/usr/local/bin --filename=composer